Just my 2-cents from a Shrockworks bumper guy.....
I have a 2012 Nissan Frontier with Shrockworks Front and Rear bumpers.
The Shrockworks front bumper is a lot heavier in weight compared the ARB...I am guessing 20-30lbs?
Personally I think the Front ARB bumper looks better than the Shrockworks.
You may want to consider what kind of off-roading you plan on doing.
I was just on a off-roading/overlanding trip with my Shrockworks front bumper and two other second generation Frontiers with ARB front bumpers. We where on the Morrison jeep trail in Wyoming ...the trail is 28 tight switchbacks going up the side of a mountain. We literally had to touch/bash our front bumpers into the side of the mountain in order to get thru the tight switchbacks.
The Frontier with the ARB bumper took some damage to the housing (plastic ?) from the lights in the bumper where as the Shrockworks (Less lights and recessed lights) only took damage to the powdercoat.
Pics of shrockworks bumper after morrison jeep trail:
If you want a bumper that is super heavy in weight and pretty much indestructible get a Shrockworks
If you want a lighter in weight and better looking / more lighting options look at a ARB
You may also want to consider the (fairly new on the market) Hefty Fabworks aluminum plate bumper almost as strong as the steel plate bumper but lighter in weight.
*EDIT:*
I just breezed through your build thread on your 2011 Frontier....looks like you already have a Shrockworks front bumper.....LOL
From your original post I assumed you still had a stock front bumper.
Nice truck !! by the way,,,,Not sure why but I have always been partial to color white = easy to take care of and touch up.
*EDIT#2*
Wait maybe you dont have the White 2011 Nissan Frontier anymore??? LOL
I seen some of your other posts about Subaru outbacks , Tacomas and Tundras.
Hit me with a rock please....you did ask for feedback from ARB bumper owners.
Well maybe my post will help someone else considering ARB or Shrockworks.